
The GREISINGER logo, representing the manufacturer of this oxygen tester.
Model: GOX 100 (Part Number: 600437)
The GREISINGER GOX 100 is a compact and precise measuring instrument designed for atmospheric oxygen measurements. It is suitable for a wide range of applications, including scuba diving, workplace safety, and air conditioning and ventilation technology. This manual provides essential information for the proper setup, operation, and maintenance of your GOX 100 device.
Verify that all items are present in the package:
The oxygen sensor is typically pre-connected to the GOX 100 via a cable. Ensure the connection is firm and secure.

The GREISINGER GOX 100 device with its attached oxygen sensor, displaying an oxygen reading of 20.9%.
The GOX 100 features an adjustable automatic off function to conserve battery life. If enabled, the device will power off after a period of inactivity. Refer to the full manual for instructions on how to adjust or disable this feature.
Regular calibration ensures the accuracy of your GOX 100. The device supports easy calibration in ambient air.

The GREISINGER GOX 100 displaying 21.0% O2, indicating a successful calibration in ambient air.
The GOX 100 features a convenient, easily replaceable sensor element. Over time, the sensor's performance may degrade. When replacement is necessary:
| Problem | Possible Cause / Solution |
|---|---|
| Device does not power on | Check battery installation and charge. Replace battery if necessary. |
| Inaccurate readings | Perform calibration (Section 6). Check sensor for damage or contamination. Sensor may need replacement. |
| Display shows 'Err' or similar | Indicates a sensor error or malfunction. Try recalibrating. If issue persists, sensor may need replacement or contact support. |
| Automatic off too soon/not at all | Adjust the automatic off settings (refer to full manual). |
| Parameter | Value |
|---|---|
| Measurement Range | 0 - 100 % Oxygen |
| Resolution | 0.1 % |
| Measurement Accuracy | 0 % (Note: This likely refers to a specific condition or a typo in source data, typical accuracy is usually +/- a percentage point) |
| Power Supply | 9V block battery |
| Protection Type | IP65 |
| Dimensions (H x W) | 106 mm x 67 mm |
| Weight | 150 g (device only, approx.) |
| Cable Length (sensor) | 0.7 m |
| Thermal Compensation | Automatic |
GREISINGER products are manufactured to high quality standards. This product comes with a standard manufacturer's warranty against defects in materials and workmanship. For specific warranty terms and conditions, please refer to the warranty card included with your product or visit the official GREISINGER website.
For technical support, troubleshooting assistance, or to inquire about replacement parts and sensors, please contact GREISINGER customer service through their official website or the contact information provided in your product documentation.
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